Improvement in the manufacture of leather



iillnited earls ggatrnt (tilting.

SAMUEL B. JENKS AND FREDERICK A. HOLCO'MB, OF GRAND RAPIDS,

MICHIGAN.

Letters Patent No. 111,214, dated January 24, 1871.

IMPROVEMENT IN THE MANUFACTURE OF LEATHER.

The-Schedule referred to in these Letters- Patentand making part of thesame.

ing to the nature of the skins and the quality of leather it is desiredto produce, but not so long as to fully tan them, (in other words, notso long but that they would become hard andhorny if allowed to dryundisturbed.) Then take them from the tanning liquor and hang them up todry, and as they are drying, and are still in a damp condition, they areto be stretched or pulled apart.

Thus, if proper care be exercised that the skins do not dry too rapidly,and are stretched as they dry, this 7 mechanical action will prevent theadherence or agglutinating of the fibers of the skins during the processof being made into leather, and the small amount of tanning materialused will so envelop the fibers that they will not afterward adheretogether.

What we claim as our invention, and desire to secure by Letters Patent,is

The combination of a chemical with a mechanical action upon skins forthe purpose of producing leather, substantially in the manner above setforth.

SAMUEL B. JENKS. FREDERICK A. 'HOLOOMB.

Witnesses:

W. A. SHINKMAN, E. J. SHINKMAN.

